CA1322279C - Horizontal bed power assist hide applicator - Google Patents
Horizontal bed power assist hide applicatorInfo
- Publication number
- CA1322279C CA1322279C CA000571996A CA571996A CA1322279C CA 1322279 C CA1322279 C CA 1322279C CA 000571996 A CA000571996 A CA 000571996A CA 571996 A CA571996 A CA 571996A CA 1322279 C CA1322279 C CA 1322279C
- Authority
- CA
- Canada
- Prior art keywords
- slicker
- hide
- bed
- support
- drier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/26—Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/58—Drying
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Drying Of Solid Materials (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A mechanized power assisted apparatus for flattening and stretching wet tanned hides on a smooth flat horizontal bed of a vacuum hide drier preparatory to drying in the course of leather manufacture. The apparatus includes a support holding a squeegee-type slicker element for positioning closely adjacent to a hide-carrying drier bed. The slicker element has a smooth straight edge which is rotatable in a plane parallel to the surface of the plate. The slicker support is associated with a power travel drive system for moving the support in a plane parallel to and spaced from the surface of the hide-carrying bed and over a hide supported on that bed. A power thrust system is associated with the slicker element for moving the element into and out of contact with the wet hide and for exerting force on the slicker element. Spaced apart controls are provided for actuating the power assist systems for manipulating the slicker element over the surface of the hide in simulation of manual hide application. The present invention provides for the flattening and stretching of wet hides on horizontal surfaces of a hide dryer relative to the use of vertical surfaces in the prior art.
A mechanized power assisted apparatus for flattening and stretching wet tanned hides on a smooth flat horizontal bed of a vacuum hide drier preparatory to drying in the course of leather manufacture. The apparatus includes a support holding a squeegee-type slicker element for positioning closely adjacent to a hide-carrying drier bed. The slicker element has a smooth straight edge which is rotatable in a plane parallel to the surface of the plate. The slicker support is associated with a power travel drive system for moving the support in a plane parallel to and spaced from the surface of the hide-carrying bed and over a hide supported on that bed. A power thrust system is associated with the slicker element for moving the element into and out of contact with the wet hide and for exerting force on the slicker element. Spaced apart controls are provided for actuating the power assist systems for manipulating the slicker element over the surface of the hide in simulation of manual hide application. The present invention provides for the flattening and stretching of wet hides on horizontal surfaces of a hide dryer relative to the use of vertical surfaces in the prior art.
Description
~3222~
--1~
HORIZOM~AL BED POWEi~ ASSIST HI~E APPIJICA~OR
~3ACKGRQUND OF TEfE INVENTlON
FIELD O:E' THE INVENTI(3M
This invention relates to a mechanized power as~ls~ed S apparatus for applying tanned hides on a smooth flat plate preparatory to drying in the course of leather manufacture.
Tanning of leather is an ancient art. From the earli-est times, man has chanyed rough raw animal hides into supple wearable materials. This involves mechanical and 1~ chemical treatment of the hide to remove blood, lymph, adhering flesh, hair, etc. and enzymatic and bacterial action to render the hide soft and supple~ These are wet treatments. The lea-ther is commonly dyed and treated with oils and fats for lubrication, softness, strength and water-proofing. A~ter dyeing and fat-ll~uorlng, leather contains about 45 to 60 per cent water and is commonly dried to about 14 per cent moisture. Chemical and physi-cal reactions take place during dryin~ ~oose tannins, dyes and oils spread uniformly, penetra-te deeply and are firmly fixe~. Uneven drying causes migration of unfixed tannin, dye and oil to the surface, resulting in undesir able dark stains and non- uniform appearance.
A common industry technique of drying wet hides has been so-called "paste dryingO" Hides are literally pasted by the grain side to large flat plates of adhesive coated glass, porcelain or metal, and then are passed through a tunnel dryer. After drying to the desirecl moisture content, the hide is stripped of~ yieldiny flat, smooth grain, large area lea~her sheets ready ~or finishing and fabricating into various leather goods. Alternat.i~ely, the wet hides may be vacuum dried aft~r bein~ similarly spread out on a flat smooth polished plate.
Whether to be paste dxied or vacuum dried, it is essen-tial that the wet hide be in intimate contact with the ) . ~, - .
:: .
~ 3~27.~
smooth planar sur~ace with~ut any entrapped air bubbles.
The wet hide is applied to the surface and manually smoothed by means of a sq~eegee-type slicker element. This is most commonly in the form of a flat edged blade which is manipulated over the surface of the wet hide from the centre to the edge working out any entrappad air or water between the hide and plate surfaces. At the same timet the hide is stretched somewhat increasing its area. This is tough, 10 arduous worX requiring great strength and staying power.
Typic~llv, in the course of a day's work, fatigue sets in toward the end of the day and productivity is materially reduced.
Vacuum drying is faster, requires costly equipment and 15 i5 somewhat less productive. Vacuum drier6 utilize flat horizontal beds. To slick the hide the operator must reach in from the edge of the bed. It is difficult to exert force on the hide when the slicker is held at arm's length.
Because of this the hide is less uni~orm and is not stretched as much, compared to use of a vertical plate all areas of which may be closely approached. In spite of the somewhat reduced yield in hide area, the industry trend is toward greaker and greater use of horizontal bed vacuum driers. The principal objective of the present invention is to provide a mechanical power assisted apparatus to perform the back-breaking task of slicking hides on a horizontal bed, with its attendant advantages of lessened fatigue, higher productivity, and more uniform product, overcoming the disadvantages of current vacuum drying practices.
U.S. Patent No. 4,596,124, issued June 24, 1986, discloses a power assist hide applicator apparatus for ~i~
11 32~27~
flattening and stxetching a wet hide against a smooth vertical planar surface for drying, as opposed to the present horizontal surfa~e use. The apparatus i5 adapted for positioning closely adjacent to the ~mooth flat vertical plate upon which a hide is adhered for drying according to conventional tanning practice. The apparatus comprises support means holding a slicker element for ..
- 2a -'~ '' ,, ~ 3~2~7~
positioning closely adjacent to a hide-carrying plate~ The slicker ele~ent has a smooth flat edye which is rotatable in a plane parallel to the surface of the plate. ~he slicker element support means is associated with a power assisted ~ravel means for moviny the support means in a plane parallel to and spaced From the surface of the hide-carr~ing plate and over an area substantially coexten-sive with the area of a hide supported on that plate.
Power assisted thrust ~leans ~re asso~iated with the slicker element for moving the element on a horizontal path perpen-dicular ~o the vertical hide-carrying plate into and out of contact with a wet hide car~ied on the plate and for exerting Iorce on the slicker element. Spacea apart manu-ally operable control means are disclosed for actuating 1~ the po~er assist means for manipulating the slicker ele-ment over th~ vertical surface of a hide in simulation of manual hide application.
SUMMARY OF THE INVENTION
Broadly stated, the present invention is directed to a power assist hide applicator apparatus for flattening and stretching a wet hide against the smooth horizontal planar surface of ths flat bed of a ~acuum hide drier.
The apparatus is adapted to be positioned adjacent to the Elat bed of a vacuum drier as used or drying of hides ~5 according to conventional tannery practice.
The apparatus includes an elongated horizontal arrn which is rotatable into position above and closely adja-cent to the upper surface of the drier bed and functions as a slicker supportO This horizontal arm may be in the form of a straight ric;id horizontal track, or a teles-coping -tube, or the arm may be articulated with one or more joints~ Support means adapted for positioning adjacent to the bed of a vacuum drier are provided for the hori,zontal arm. Depending upon the size and con-figuration of the vacuum drier with which the hideappllcator apparatus is used, the support means may be a fixed or movable floor supported pedestal standard, or a frame adapted to be mounted above or positioned alo~g-: , ' .' 3,~2~9 side of the vacuwn drier~ Means are provided for rotat~
ing ~he horizontal arm relative to the support means both for maneuverincJ the slicker element over the sur~-face of a hide to be applied to the drier bed, and to permit the arm to be swung out of the way of the drier apparatus during vacuu~n dryiny.
A slicker element is supported from the horiæontal arm. The slicker element has a srnooth straight edge which is rot~tabl.e in ~ pl~ne par~llel-to the surface of the drler becl~ Separate motor means are provided for rotating the slicker element. Further separate i.ndependent power thrust means are associ~ted with the ,slic]cer elemen-t for moving ~he element into and out of contact with a wet hide carried on the drier .bed and for e~erting orce on the slicker element to permit smoothing and s.re ching of the hide~
Electric control means are provlded for actua,ing the several motor power assist means for manipulating the :
slicker element over thQ surface o~ a hide in simulation 20 of manual hide application. ..
BRIEF DESCRIPTION OE' THE DRAWINGS
The ;.nvention is illustrated in the accompanying draw-ings .in which correspondiy parts are identified by the same numerals and in which:
Fiyure 1 is a perspective view of a power assist hide applicator accordi.ng to the present inven~ion shown mount-ed on the top of one form of typical vacuum hide drier;
Figure 2 is a top plan view ~hereof on a re~uced scale;
Figure 3 is a le~t s.ide elevation thereofi ~i.gure 4 i5 an end elevation thereof;
Figure 5 i5 a side elevation on an enlaryed scale of the c,arria~e assembly by which a slicker element is positioned ~or movement a~ove and relative to a wet hide supported on the bed of a vacuum hide drier;
Figure 6 is a side elevation on a ~urther enlargecl scale o~ the support carriage of the ca~riage assembly;
Figure 7 is an end elevation thereof;
, ~ 3 ~5~ Q~ .
Fi~ure ~ is a vertical section th~ouyh 'che hoom tube of the carriage assembl~;
Fi~ure 9 is a side elevation of the slicker car-~riage of the carriage assembly;
Flgure 10 15 an end eleva~ion thereof;
Figure 11 is a side elevation of the drive assembly for the slicker carriage;
Figure 12 is an end elevation thereof;
E~igure 13 is an elevation of the slic~er asser~ly, Figure 14 is a sec-tion on the line 14-14 of E`igure 13 and i~ the direction of the arrows;
Figure 15 is a sec-tional view of the control handle for the hide applicator;
Figure 16 is a .schematic diagram of the control circui-t for the hide applicator, Fi~ure 17 is a perspective view of an al-ternative form of hide applicator wherein the carriage support frame is mounted below the drier bed; and Figure 18 is a perspective view of a fu~ther alter-native form of hide applicator mounted on a floor support-ed pedestal.
DETAILED DESCRIPTION OF THE PREFERRED E~IBODI~5ENT
~ eferring now to the drawings, and particularly to Figures 1 throuyh 4, there is shown one form of apparatus according to the present invention in conjunction with one form of typical horizontal bed vacuum hide drier.
~he drier shown is adapted for simultaneous drying of four larye hides per bed. It is one of the largest vacuum clriers used in the tanning industry. I~he typical vacuum drier shown, indicated generall~ at 10, comprises a hori~ontal base housing 11 enclosing heating, ~acuum and condensing circuits and associated equipmen~ for drying hides. Each dryer includes one or more flat rectangular bed or table 12, made for example of stain-3s less steel sheeting, and haviny a smooth top surfaceupon Which a wet hide is applied for drying.
Each bed or table includes appropriate heating members and an overlying vacuum hood is provided for ~ ~2~
each bed. In -~he typical emhodiment shown, the vacuum hood for the lowermost hed is carried on the under side of the next adjacent bed, and so on, with a separate vacuum hood for the topmost b~cl 12. The typical vacuum 5 drier 10 also includes a pair of vertical housings 13 and 14 enclosing liftiny apparatus fox the flat beds 12, along with flexible couplings to the equipment comprisincJ
the heating, vacuum and condensi~lg ci.rcuits~
I~he details of constructic>n of vacuum driers are well known in the industry and form no part of the present inventionO A typical vacuum hide drier of the type shown is tha-t wh.ich is commercially available from :
Of~.ici ne di Cartigliano, S.P.A., of Vicenza, Italy.
~he apparatus of the present in~ention comprises a rectangular fra.me indicated generally at lS adapted to be rigidly secured above and parallel to the fla~ beds 12 OlC the va~uum drier lG. Frame lS includes a pair of transverse horizontal beams 16 and 17 each adapted to rest upon and to be secured to vertical housings 13 and 14, re~pectively, of the -~acuum drier 10. Erame 15 also .includes a pair of elc,nyated horizontal longi.tudina:L
parallel beams 18, supported by cross beams 16 and 17, which func~.ion as tracks for carriage assemblies indicated generally at 19, as hereinafter described in greater detail.
It will be noted that frame 15 as illustrated is horizontally disposed, rectangular and dimensionally is generally p.ropor~ionate to ~he beds 12 o the vacuum clrier~ However, the dimensions c>f frame 15 are somewhat greater than those of bed 12 such that ~rack~ 1~ are spaced outwardly from the side edges of the bed 12.
This is ~o permit the slicker mechanism supported from carriage 19 to be swuny ouk of the vertical paths of movement of beds 12 during operation of the drying cycle.
Ov~rlyillg each track/beam 18 and supported by cross beams 16 and 17, is a trough or tray 20 aclapt~d to contain elect.rical wlres and cabl~s, air or hyclraulic hoses ancl the llke for controlling operation of the elements of ~3~2~
--7~
the Carria-Je assembl~.
~ s best se~en in E'igures 5 -through 7, caxriage assembly 19 includes a support carriage hou~ing com-prising a pair of parallel spaced apart vertical plates 21 and 22 connected adjacent their top edges by a pair of hoxiæontal cross members 23 each supporting a pair of rollers 24 for engagement with the top surface of track/beam 18 for supporting the carriage assembly for reciprocable movement along the track. A second pair of horizontal cross members 25 each supports a pair oE
rollers 26 for engagement with the bottom surface of track/beam 18. Additional guide rollers 27 are set in slots in the vertical ~ide plates for engagement with the opposite sides of track/beam 13.
As seen in Figure l, for reciprocable movement of the entire carriage assembly 19, one end of a sprocket chain or similar linear drive means 28 is secured to one end of the carriage housing. The drive chain 28 extends horizontally to and around an idler sprocket 29 supported on the cross beam 16 and thence horizontally to a drive sprocket 31 supported by the opposite cross beam 17.
The drive chain then extends back to the carriage housing where its opposite end is secured to the housing. The drive sprocket 31 is driven b~ an hyclraulic or electric motor 33 which is also supported by the cross beam 17.
Preferably th~ drive chain is connected to the carriage housing through shock absorbers. Preferably also, limit switches 34 are in-terposed in the path of the carriage 19 in its reciprocal movement so that the motor speed is reduced and the carxiage decelerates as it approaches either end oE its stroke. The support carriage pro vi~-es for side to side movement or X motion o~ the slicker element.
The carriage housing includes a bottom plate 35 from which a c~lindrical vertical boom tube 36 is supported.
As seen in Figure 8, the boom tube 36 includes an outer stationary member and an inner concentric tubular member 37 journaled ~or rotation in upper and lower ring bear-.: ~
.
~ ~2~27~
--8--in~ 38 and 39. The inner boom tube may be xotated m~nu~lly to rnove the applicator illtO and out of operat-ing posi-tion above the drier ~ed. Alternatively, the inner boom tube 37 may ~e driven for limited rota,~ion, for example, by an hydraulic or electric motor 40,,Jthrough gear 41 or equivalent transmission means. ~' As ~est seen in Fic~ures 5 and 9 through 1~, an e.:Lo~- : :.
gated horizontal arm ~4 is fixed to plate 45 a-t ~he bottom end of inner boom tube 37 or rotation therewith.
One end of the hoxi~ontal arm 4~1 is rigidly secured to spaced apar~ plates 46 and 47 which in ~urn are rig.i~:Ly secured to -the bottom end of the boom tube. '~he hori-zontal arra 44 functions as a horizontal track for reci-procable movemellt along the track of a sl.icker carri.aye, indicated generally at 48. Slicker carriage ~8 includes ~op and bo-ttom wa3.1s ~9 and 50, respectively, and side walls 51 and 52. Rollers 53 are supported in the top and the bottom walls of the carriage housing for engage-ment, respectively, wi-th the top and bottom surfaces of arm 44 and ro].lers 54 in -the side walls of the carriage engage the opposite sides o arrn ~4.
To accomplish reciprocal movement of the slick.er carriage 48 along arrn 44, one end of a sprocket chain 55 or similar .line~r drive means, i.s secur~d to a bra~et 56 mounted on top of the carriage 98. The drive chain extends horizontally to and around idler sprockets sup-ported in a bracket 57 on the end o the horizontal track/arm remote from .its connection to the boom tube.
~he drive chain extends from the idlers horizontally to a drive sprocket 5~ supported on a shaft between motor mount plates 96 and ~17. The drive chain then e~tends back to the carriage where i-ts opposite end is secured to the bracket 56. I'he drive ~procket is dri.ven by an hydraulic or electric motor 60 which is supported on plate 97. The drive chain is pre:Eerably connected to the carriage through shock absorbing connector 61 and pxeferably limit switch~s 62 are provided in the path oE the carriage for decelerating the rate of travel of 1 3 ~ 2 2 ~ ~
the carriage at the OppOS7 te ends of the reclprocal s-tr~.e. The slicker carriage provicles in and out move-ment or 'X motion of the slicker element.
Referring now to Fiyurés 5, 13 and 14, a slicker assembly, indicated generally at 70, is ~upported on s]icker carriage 48 for reciprocal movement therewith along arm/track 44. A slicker head body 71 is rigidly secured to the outside surface of slicker carriage side wall 52 for movemen~ therewith, A tubular sha f t 7 2 i s journaled within head body 71 in upper and lower sleeve bearings 73 and 7~ or limited reclprocal mo~ement relatlve to ~he body. A cap 75 is fixed to the top end of shaft 72 for movement therewith~ The outermost end of the piston 76 of air cylinder 77 is secured to cap 75 to cause reciprocal movemen~ of the shaft 72.
A slicker element in the form of a straigh~ edge ~, blade 78 is carried irn a blade holder 79 at the lower-most end of a blade actuator shaft 80. Actuator shaft 80 is journaled for rotation within sh~Et 72 supported h,y upper and lower ring bearings 81 and 82 for recipro-caL movement wi,th shaft 72 and rotation relative to it~
Actuator shaEt 80 is connected by coupling 83 to the drive shaft 84 of hydraulic motor 850 Motor 85 is con-trolled thro~l~h potentiometer 86 enclosed within hous-ing 87 Mounted on top of the motor and reciprocable wi-th i~ .
SlicXer blade 78 is disposed so as to be capable of applying pressure -to a hide. It may be perpendicular to the hide as shown or may be disposed angularly rela-tive to the surface of the drier bed and a hide carriedby the bed in closer simulation of manual manipulation.
Blade 78 is reciprocatecl toward and away from the hide in Z motion by action of cylinder 77 and an adjustable controllable thrusting force is exerted to hold the blacle edge in contact with the hide by the cylinder which is connected to a source of air under pressure. The slicker assembly provides up and down or Z motion of the slicker element. Although preferabl,y in the form of a blade, - :
1~3 2 2 f~ r~ ~
the slicker element may take the ~orm of a small diameter elongated roller.
In order to prevent Xinking, and to minimize the adverse effects of multiple flexing of the wires, cables, hoses, ~tc. associated with operation of the hide applicator due to movement o~ the support and slicker carriages, trsughs or trays are providPd for containing the slack in these lines. Tray 20 forms part of the support frame f~r the support carriage 19 (Figures 1 through 7). An inverted yoke 90 extend~ around and over tray 20 and supports one end of a flexible guide channel or guard 91 through whizh the cables etc. extend. PlastitrakTM sold by McGraw~Edison Company is one exemplary form of flexible guide channel or cable guard which may be used. A similar tray 95 is provided adjacenk to horizontal arm 44 (Figure 5) supported at one end from a bracket 96 on the licker carriage mvtor mount (Figure 12) and at the other by an extension from idler bracket 57. A similar flexible guide channel or guard 97 (Figure 10) is secured to a bracket 98 extending outwardly from the slicker carriage and overlying the tray 95.
Manually operable control means for motors 33 and 60 operating reciprocal movement of carriages 19 and 48, respectively, motor 85 operating rotation of the slicker element, and for flow of air to cylind~r 77 to operate thrust motion of the slicker element, are preferably spaced apart from the applicator apparatus, but in close proximity SQ that the operator at all times may view the application operation. The control assembly is shown in Figure 15. A
~-bar joystick handle 100 is mounted on one end o~ a il3 ~7~
tubular shaft 101 which is journaled for rotation in ~earings 102 within pivot housing 103. The opposite end of shaft 101 i5 connected to potentiometer 104 which is electrically connected to potentiometer 86 in the slicker assembly. Housing 103 in turn is supported within stationary housing 99 for universal pivotal movement in ball and socket bearing 105. Housing 103 supports an annular flange 106, the surface of which - lOa -`.!~' `
--1~
HORIZOM~AL BED POWEi~ ASSIST HI~E APPIJICA~OR
~3ACKGRQUND OF TEfE INVENTlON
FIELD O:E' THE INVENTI(3M
This invention relates to a mechanized power as~ls~ed S apparatus for applying tanned hides on a smooth flat plate preparatory to drying in the course of leather manufacture.
Tanning of leather is an ancient art. From the earli-est times, man has chanyed rough raw animal hides into supple wearable materials. This involves mechanical and 1~ chemical treatment of the hide to remove blood, lymph, adhering flesh, hair, etc. and enzymatic and bacterial action to render the hide soft and supple~ These are wet treatments. The lea-ther is commonly dyed and treated with oils and fats for lubrication, softness, strength and water-proofing. A~ter dyeing and fat-ll~uorlng, leather contains about 45 to 60 per cent water and is commonly dried to about 14 per cent moisture. Chemical and physi-cal reactions take place during dryin~ ~oose tannins, dyes and oils spread uniformly, penetra-te deeply and are firmly fixe~. Uneven drying causes migration of unfixed tannin, dye and oil to the surface, resulting in undesir able dark stains and non- uniform appearance.
A common industry technique of drying wet hides has been so-called "paste dryingO" Hides are literally pasted by the grain side to large flat plates of adhesive coated glass, porcelain or metal, and then are passed through a tunnel dryer. After drying to the desirecl moisture content, the hide is stripped of~ yieldiny flat, smooth grain, large area lea~her sheets ready ~or finishing and fabricating into various leather goods. Alternat.i~ely, the wet hides may be vacuum dried aft~r bein~ similarly spread out on a flat smooth polished plate.
Whether to be paste dxied or vacuum dried, it is essen-tial that the wet hide be in intimate contact with the ) . ~, - .
:: .
~ 3~27.~
smooth planar sur~ace with~ut any entrapped air bubbles.
The wet hide is applied to the surface and manually smoothed by means of a sq~eegee-type slicker element. This is most commonly in the form of a flat edged blade which is manipulated over the surface of the wet hide from the centre to the edge working out any entrappad air or water between the hide and plate surfaces. At the same timet the hide is stretched somewhat increasing its area. This is tough, 10 arduous worX requiring great strength and staying power.
Typic~llv, in the course of a day's work, fatigue sets in toward the end of the day and productivity is materially reduced.
Vacuum drying is faster, requires costly equipment and 15 i5 somewhat less productive. Vacuum drier6 utilize flat horizontal beds. To slick the hide the operator must reach in from the edge of the bed. It is difficult to exert force on the hide when the slicker is held at arm's length.
Because of this the hide is less uni~orm and is not stretched as much, compared to use of a vertical plate all areas of which may be closely approached. In spite of the somewhat reduced yield in hide area, the industry trend is toward greaker and greater use of horizontal bed vacuum driers. The principal objective of the present invention is to provide a mechanical power assisted apparatus to perform the back-breaking task of slicking hides on a horizontal bed, with its attendant advantages of lessened fatigue, higher productivity, and more uniform product, overcoming the disadvantages of current vacuum drying practices.
U.S. Patent No. 4,596,124, issued June 24, 1986, discloses a power assist hide applicator apparatus for ~i~
11 32~27~
flattening and stxetching a wet hide against a smooth vertical planar surface for drying, as opposed to the present horizontal surfa~e use. The apparatus i5 adapted for positioning closely adjacent to the ~mooth flat vertical plate upon which a hide is adhered for drying according to conventional tanning practice. The apparatus comprises support means holding a slicker element for ..
- 2a -'~ '' ,, ~ 3~2~7~
positioning closely adjacent to a hide-carrying plate~ The slicker ele~ent has a smooth flat edye which is rotatable in a plane parallel to the surface of the plate. ~he slicker element support means is associated with a power assisted ~ravel means for moviny the support means in a plane parallel to and spaced From the surface of the hide-carr~ing plate and over an area substantially coexten-sive with the area of a hide supported on that plate.
Power assisted thrust ~leans ~re asso~iated with the slicker element for moving the element on a horizontal path perpen-dicular ~o the vertical hide-carrying plate into and out of contact with a wet hide car~ied on the plate and for exerting Iorce on the slicker element. Spacea apart manu-ally operable control means are disclosed for actuating 1~ the po~er assist means for manipulating the slicker ele-ment over th~ vertical surface of a hide in simulation of manual hide application.
SUMMARY OF THE INVENTION
Broadly stated, the present invention is directed to a power assist hide applicator apparatus for flattening and stretching a wet hide against the smooth horizontal planar surface of ths flat bed of a ~acuum hide drier.
The apparatus is adapted to be positioned adjacent to the Elat bed of a vacuum drier as used or drying of hides ~5 according to conventional tannery practice.
The apparatus includes an elongated horizontal arrn which is rotatable into position above and closely adja-cent to the upper surface of the drier bed and functions as a slicker supportO This horizontal arm may be in the form of a straight ric;id horizontal track, or a teles-coping -tube, or the arm may be articulated with one or more joints~ Support means adapted for positioning adjacent to the bed of a vacuum drier are provided for the hori,zontal arm. Depending upon the size and con-figuration of the vacuum drier with which the hideappllcator apparatus is used, the support means may be a fixed or movable floor supported pedestal standard, or a frame adapted to be mounted above or positioned alo~g-: , ' .' 3,~2~9 side of the vacuwn drier~ Means are provided for rotat~
ing ~he horizontal arm relative to the support means both for maneuverincJ the slicker element over the sur~-face of a hide to be applied to the drier bed, and to permit the arm to be swung out of the way of the drier apparatus during vacuu~n dryiny.
A slicker element is supported from the horiæontal arm. The slicker element has a srnooth straight edge which is rot~tabl.e in ~ pl~ne par~llel-to the surface of the drler becl~ Separate motor means are provided for rotating the slicker element. Further separate i.ndependent power thrust means are associ~ted with the ,slic]cer elemen-t for moving ~he element into and out of contact with a wet hide carried on the drier .bed and for e~erting orce on the slicker element to permit smoothing and s.re ching of the hide~
Electric control means are provlded for actua,ing the several motor power assist means for manipulating the :
slicker element over thQ surface o~ a hide in simulation 20 of manual hide application. ..
BRIEF DESCRIPTION OE' THE DRAWINGS
The ;.nvention is illustrated in the accompanying draw-ings .in which correspondiy parts are identified by the same numerals and in which:
Fiyure 1 is a perspective view of a power assist hide applicator accordi.ng to the present inven~ion shown mount-ed on the top of one form of typical vacuum hide drier;
Figure 2 is a top plan view ~hereof on a re~uced scale;
Figure 3 is a le~t s.ide elevation thereofi ~i.gure 4 i5 an end elevation thereof;
Figure 5 i5 a side elevation on an enlaryed scale of the c,arria~e assembly by which a slicker element is positioned ~or movement a~ove and relative to a wet hide supported on the bed of a vacuum hide drier;
Figure 6 is a side elevation on a ~urther enlargecl scale o~ the support carriage of the ca~riage assembly;
Figure 7 is an end elevation thereof;
, ~ 3 ~5~ Q~ .
Fi~ure ~ is a vertical section th~ouyh 'che hoom tube of the carriage assembl~;
Fi~ure 9 is a side elevation of the slicker car-~riage of the carriage assembly;
Flgure 10 15 an end eleva~ion thereof;
Figure 11 is a side elevation of the drive assembly for the slicker carriage;
Figure 12 is an end elevation thereof;
E~igure 13 is an elevation of the slic~er asser~ly, Figure 14 is a sec-tion on the line 14-14 of E`igure 13 and i~ the direction of the arrows;
Figure 15 is a sec-tional view of the control handle for the hide applicator;
Figure 16 is a .schematic diagram of the control circui-t for the hide applicator, Fi~ure 17 is a perspective view of an al-ternative form of hide applicator wherein the carriage support frame is mounted below the drier bed; and Figure 18 is a perspective view of a fu~ther alter-native form of hide applicator mounted on a floor support-ed pedestal.
DETAILED DESCRIPTION OF THE PREFERRED E~IBODI~5ENT
~ eferring now to the drawings, and particularly to Figures 1 throuyh 4, there is shown one form of apparatus according to the present invention in conjunction with one form of typical horizontal bed vacuum hide drier.
~he drier shown is adapted for simultaneous drying of four larye hides per bed. It is one of the largest vacuum clriers used in the tanning industry. I~he typical vacuum drier shown, indicated generall~ at 10, comprises a hori~ontal base housing 11 enclosing heating, ~acuum and condensing circuits and associated equipmen~ for drying hides. Each dryer includes one or more flat rectangular bed or table 12, made for example of stain-3s less steel sheeting, and haviny a smooth top surfaceupon Which a wet hide is applied for drying.
Each bed or table includes appropriate heating members and an overlying vacuum hood is provided for ~ ~2~
each bed. In -~he typical emhodiment shown, the vacuum hood for the lowermost hed is carried on the under side of the next adjacent bed, and so on, with a separate vacuum hood for the topmost b~cl 12. The typical vacuum 5 drier 10 also includes a pair of vertical housings 13 and 14 enclosing liftiny apparatus fox the flat beds 12, along with flexible couplings to the equipment comprisincJ
the heating, vacuum and condensi~lg ci.rcuits~
I~he details of constructic>n of vacuum driers are well known in the industry and form no part of the present inventionO A typical vacuum hide drier of the type shown is tha-t wh.ich is commercially available from :
Of~.ici ne di Cartigliano, S.P.A., of Vicenza, Italy.
~he apparatus of the present in~ention comprises a rectangular fra.me indicated generally at lS adapted to be rigidly secured above and parallel to the fla~ beds 12 OlC the va~uum drier lG. Frame lS includes a pair of transverse horizontal beams 16 and 17 each adapted to rest upon and to be secured to vertical housings 13 and 14, re~pectively, of the -~acuum drier 10. Erame 15 also .includes a pair of elc,nyated horizontal longi.tudina:L
parallel beams 18, supported by cross beams 16 and 17, which func~.ion as tracks for carriage assemblies indicated generally at 19, as hereinafter described in greater detail.
It will be noted that frame 15 as illustrated is horizontally disposed, rectangular and dimensionally is generally p.ropor~ionate to ~he beds 12 o the vacuum clrier~ However, the dimensions c>f frame 15 are somewhat greater than those of bed 12 such that ~rack~ 1~ are spaced outwardly from the side edges of the bed 12.
This is ~o permit the slicker mechanism supported from carriage 19 to be swuny ouk of the vertical paths of movement of beds 12 during operation of the drying cycle.
Ov~rlyillg each track/beam 18 and supported by cross beams 16 and 17, is a trough or tray 20 aclapt~d to contain elect.rical wlres and cabl~s, air or hyclraulic hoses ancl the llke for controlling operation of the elements of ~3~2~
--7~
the Carria-Je assembl~.
~ s best se~en in E'igures 5 -through 7, caxriage assembly 19 includes a support carriage hou~ing com-prising a pair of parallel spaced apart vertical plates 21 and 22 connected adjacent their top edges by a pair of hoxiæontal cross members 23 each supporting a pair of rollers 24 for engagement with the top surface of track/beam 18 for supporting the carriage assembly for reciprocable movement along the track. A second pair of horizontal cross members 25 each supports a pair oE
rollers 26 for engagement with the bottom surface of track/beam 18. Additional guide rollers 27 are set in slots in the vertical ~ide plates for engagement with the opposite sides of track/beam 13.
As seen in Figure l, for reciprocable movement of the entire carriage assembly 19, one end of a sprocket chain or similar linear drive means 28 is secured to one end of the carriage housing. The drive chain 28 extends horizontally to and around an idler sprocket 29 supported on the cross beam 16 and thence horizontally to a drive sprocket 31 supported by the opposite cross beam 17.
The drive chain then extends back to the carriage housing where its opposite end is secured to the housing. The drive sprocket 31 is driven b~ an hyclraulic or electric motor 33 which is also supported by the cross beam 17.
Preferably th~ drive chain is connected to the carriage housing through shock absorbers. Preferably also, limit switches 34 are in-terposed in the path of the carriage 19 in its reciprocal movement so that the motor speed is reduced and the carxiage decelerates as it approaches either end oE its stroke. The support carriage pro vi~-es for side to side movement or X motion o~ the slicker element.
The carriage housing includes a bottom plate 35 from which a c~lindrical vertical boom tube 36 is supported.
As seen in Figure 8, the boom tube 36 includes an outer stationary member and an inner concentric tubular member 37 journaled ~or rotation in upper and lower ring bear-.: ~
.
~ ~2~27~
--8--in~ 38 and 39. The inner boom tube may be xotated m~nu~lly to rnove the applicator illtO and out of operat-ing posi-tion above the drier ~ed. Alternatively, the inner boom tube 37 may ~e driven for limited rota,~ion, for example, by an hydraulic or electric motor 40,,Jthrough gear 41 or equivalent transmission means. ~' As ~est seen in Fic~ures 5 and 9 through 1~, an e.:Lo~- : :.
gated horizontal arm ~4 is fixed to plate 45 a-t ~he bottom end of inner boom tube 37 or rotation therewith.
One end of the hoxi~ontal arm 4~1 is rigidly secured to spaced apar~ plates 46 and 47 which in ~urn are rig.i~:Ly secured to -the bottom end of the boom tube. '~he hori-zontal arra 44 functions as a horizontal track for reci-procable movemellt along the track of a sl.icker carri.aye, indicated generally at 48. Slicker carriage ~8 includes ~op and bo-ttom wa3.1s ~9 and 50, respectively, and side walls 51 and 52. Rollers 53 are supported in the top and the bottom walls of the carriage housing for engage-ment, respectively, wi-th the top and bottom surfaces of arm 44 and ro].lers 54 in -the side walls of the carriage engage the opposite sides o arrn ~4.
To accomplish reciprocal movement of the slick.er carriage 48 along arrn 44, one end of a sprocket chain 55 or similar .line~r drive means, i.s secur~d to a bra~et 56 mounted on top of the carriage 98. The drive chain extends horizontally to and around idler sprockets sup-ported in a bracket 57 on the end o the horizontal track/arm remote from .its connection to the boom tube.
~he drive chain extends from the idlers horizontally to a drive sprocket 5~ supported on a shaft between motor mount plates 96 and ~17. The drive chain then e~tends back to the carriage where i-ts opposite end is secured to the bracket 56. I'he drive ~procket is dri.ven by an hydraulic or electric motor 60 which is supported on plate 97. The drive chain is pre:Eerably connected to the carriage through shock absorbing connector 61 and pxeferably limit switch~s 62 are provided in the path oE the carriage for decelerating the rate of travel of 1 3 ~ 2 2 ~ ~
the carriage at the OppOS7 te ends of the reclprocal s-tr~.e. The slicker carriage provicles in and out move-ment or 'X motion of the slicker element.
Referring now to Fiyurés 5, 13 and 14, a slicker assembly, indicated generally at 70, is ~upported on s]icker carriage 48 for reciprocal movement therewith along arm/track 44. A slicker head body 71 is rigidly secured to the outside surface of slicker carriage side wall 52 for movemen~ therewith, A tubular sha f t 7 2 i s journaled within head body 71 in upper and lower sleeve bearings 73 and 7~ or limited reclprocal mo~ement relatlve to ~he body. A cap 75 is fixed to the top end of shaft 72 for movement therewith~ The outermost end of the piston 76 of air cylinder 77 is secured to cap 75 to cause reciprocal movemen~ of the shaft 72.
A slicker element in the form of a straigh~ edge ~, blade 78 is carried irn a blade holder 79 at the lower-most end of a blade actuator shaft 80. Actuator shaft 80 is journaled for rotation within sh~Et 72 supported h,y upper and lower ring bearings 81 and 82 for recipro-caL movement wi,th shaft 72 and rotation relative to it~
Actuator shaEt 80 is connected by coupling 83 to the drive shaft 84 of hydraulic motor 850 Motor 85 is con-trolled thro~l~h potentiometer 86 enclosed within hous-ing 87 Mounted on top of the motor and reciprocable wi-th i~ .
SlicXer blade 78 is disposed so as to be capable of applying pressure -to a hide. It may be perpendicular to the hide as shown or may be disposed angularly rela-tive to the surface of the drier bed and a hide carriedby the bed in closer simulation of manual manipulation.
Blade 78 is reciprocatecl toward and away from the hide in Z motion by action of cylinder 77 and an adjustable controllable thrusting force is exerted to hold the blacle edge in contact with the hide by the cylinder which is connected to a source of air under pressure. The slicker assembly provides up and down or Z motion of the slicker element. Although preferabl,y in the form of a blade, - :
1~3 2 2 f~ r~ ~
the slicker element may take the ~orm of a small diameter elongated roller.
In order to prevent Xinking, and to minimize the adverse effects of multiple flexing of the wires, cables, hoses, ~tc. associated with operation of the hide applicator due to movement o~ the support and slicker carriages, trsughs or trays are providPd for containing the slack in these lines. Tray 20 forms part of the support frame f~r the support carriage 19 (Figures 1 through 7). An inverted yoke 90 extend~ around and over tray 20 and supports one end of a flexible guide channel or guard 91 through whizh the cables etc. extend. PlastitrakTM sold by McGraw~Edison Company is one exemplary form of flexible guide channel or cable guard which may be used. A similar tray 95 is provided adjacenk to horizontal arm 44 (Figure 5) supported at one end from a bracket 96 on the licker carriage mvtor mount (Figure 12) and at the other by an extension from idler bracket 57. A similar flexible guide channel or guard 97 (Figure 10) is secured to a bracket 98 extending outwardly from the slicker carriage and overlying the tray 95.
Manually operable control means for motors 33 and 60 operating reciprocal movement of carriages 19 and 48, respectively, motor 85 operating rotation of the slicker element, and for flow of air to cylind~r 77 to operate thrust motion of the slicker element, are preferably spaced apart from the applicator apparatus, but in close proximity SQ that the operator at all times may view the application operation. The control assembly is shown in Figure 15. A
~-bar joystick handle 100 is mounted on one end o~ a il3 ~7~
tubular shaft 101 which is journaled for rotation in ~earings 102 within pivot housing 103. The opposite end of shaft 101 i5 connected to potentiometer 104 which is electrically connected to potentiometer 86 in the slicker assembly. Housing 103 in turn is supported within stationary housing 99 for universal pivotal movement in ball and socket bearing 105. Housing 103 supports an annular flange 106, the surface of which - lOa -`.!~' `
2 ~ ~ ~
-Ll-encJages the er~ds of csprincJ biased plun~er~ o~ each of the linear mo~ion pote~ iometers 107 controlling curxent to the operating motors~ Thumb switches 110 or 111 actuate the system fGr flow of air to cylinder 77 for moving the slic~er blade 78 lnto contact with a hide to be flattened and stretched.
P~otary movemen-t of handle 100 translates into co~-responding rotary movement of slicker blade 7~. Right and leE-t pivotal move-~ent of the handle translates into corresponding movement of the ~uppoxt carriage along beam/track 18 and up and down pivotal movement o the handle translates into reciprocal movement of slicker carrlage 48 alo~g arrn/track 44. The analogous control system of the aforesaid United States Patent No.
4,596,124 may alterna-tivel~ be used for operating the hide applicator of the present invention.
Figure 16 illustrates the electrical control circui~
The X and Y potentiometers 107 are rate controlled systems.
With the poterltiometer wiper in the mid-position of its throw, no current will flow in to Ihe associated servo valve, thus no X or Y actuator movement. Upon moving the wiper from its micl-position, responsive to movement of the joystick, current will flow in the servo valve r thus causing X or Y or both X ancl Y actuator movement.
The farther the deviation of the wiper from its mid-position, the greater the curren~ flow, causing a higher rate of actuator movement. Reversing the m~vement o the wiper -to the other side of mid-position on the p~tentiometer reverses the current ~low direction through the servo valve, causiny the X or v, or both, actuator movement in the opposite direction.
Two limit switches 34 are provided for the X actuator (carriage 19) and two limit switches 62 are provided for ~ie Y ac~uator (carriaye 48) to detect end of travel.
The limit switches are proximity switches that detect the presence or absence of metal. If the X ac-tuator reaches end of travel, relay contact Kl (located in ~eries with the servo valve) will open, causing zero 3~22~'~
current flow ~hrou~3h the servo valve and the actuator will come to a stop, preventing damage to the st:ructura~
Conversely, if the Y actuator reaches end of travel, rela~ contact ~2 wlll open, causing the Y actuator to S come to a stop. During normal operation the limit switches and associa~2d logic will cause relays ~1 and ~2 to be energized (will allow curren-t flol.~ through the servo v~lves~ one of the limit switches detects the pxesence of met~l (end of travel) a comparator Ul (con-nected to the limit swil~ch) ~7ill output a logic "1"
causincJ the output of a nand gate U4 to switch :E~om a logic "I" to a logic "0'; which in turn will cause the final nand gate U6 to switch frorn a loglc "0" to a loyic "1", thus de-energizin~ -the relay~ Reversing the direc-tion of the joystick potentiometer will again eneryize the relay through nand ga-te U5, inverter U3 and comparator U2, allowing the ac-tua~or to be moved out of the end of travel limit.
The Z rotation control is a closed loop servo cir-cuit. A potentiometer L04 on the joystick provides the Z rotation command and a potentiolne~er 86 on the Z rota-tion actuator (shaft 8()) provi~es the Z rotation Eeed~
back. Whenevex the position of the Z rotation command potentiometer 104 is changed an appropriate current will flow through the Z servo valve causiny the Z rotation ~eedback to equal the Z rotation command (zero error).
Driving the ~ rotation actuator 80 correspondingly drives the slicker element 78.
Figure 17 shows an alternative Form of support for a hide applicator according to the present inventionO
The typical vacuum drier 10 is identical to that already described. The modified support Xrame 15A is mounted below the drier bed and comprises a pair of end cross beams 16A and 17A supporting a pair oE horizontal 3~ longitudinal beams 18A which function as a track for reciprocal mvvement of a carriage assembly l9A~ generally as p~eviously described. The difference is that hori-zontal arm 44 i~s supported above the vacuum drier bed 12 from carriacJe asseMbly l9A by mean.s of an upwardly extend-ing vertical boom tube 36A. Apart from these differ-ences, the overalL structure and operation o the hide applicator apparatus is as already described.
The form of vacuurn drier illustrated in Figures 1 through 4 and 17 is in-tended -for the simultaneous drying of four hides per bed. These hldes are ordinarily applied by opera-tors working slmultaneous:Ly on each side of the bed applyiny and removing hides. For smaller driers the support Erame may include a sin~le longitlldlnal beam/track supported above and adjacent to the drier bed, or it ma~ be a ~ee-standing single lrack ~rame adapted for positioning alongside and adiacent to a drier with~
out being physically attached thereto~
Referring to E~igure I8, there is shown a further alternative fonn of mounting support for the hide appli-cator arm/trac~ ~4. This form of applicator apparatus is for use with an alternative form of smaller vacuum hide drier 10~ havi.ng a flat drier bed 12A supported on a base housing llA. I'he vacuum head is not shown.
In this insta,~ce, the horizontal. arm/track ~4 is suppoxt-ed by a vertical standard or pedestal llS wh.ich in turn i5 sllpported ~y a ~loor rnounted base 116. The pedestal standard is pos.itioned closely adjacent to the edge of the drier bed 12A. Base 116 may be stationary or may be movable, mounted on casters or the like. Arm/track 44 is rotatably mounted at the top of the pedestal standard 115~ Manipulation of the slickex element 78 is the result of the combination of pivotal rota-tion of the arm/track above the hide surface and reciprocal movement of the slicker carriaye 48. The structure of the arm/track 44 and slicker carriaye 4~ and associated mec.hanisms are o-therw:ise as previousl~ described.
It is apparent that many modifications and varia-tions of this invention as hereinbefore set forth may ~e made without departiny from the spiri~ and scope thereof. The speciEic embodiments described are given by way o.f exarnple onl~ and the invention is limited only by the terms of the appended claims.
-Ll-encJages the er~ds of csprincJ biased plun~er~ o~ each of the linear mo~ion pote~ iometers 107 controlling curxent to the operating motors~ Thumb switches 110 or 111 actuate the system fGr flow of air to cylinder 77 for moving the slic~er blade 78 lnto contact with a hide to be flattened and stretched.
P~otary movemen-t of handle 100 translates into co~-responding rotary movement of slicker blade 7~. Right and leE-t pivotal move-~ent of the handle translates into corresponding movement of the ~uppoxt carriage along beam/track 18 and up and down pivotal movement o the handle translates into reciprocal movement of slicker carrlage 48 alo~g arrn/track 44. The analogous control system of the aforesaid United States Patent No.
4,596,124 may alterna-tivel~ be used for operating the hide applicator of the present invention.
Figure 16 illustrates the electrical control circui~
The X and Y potentiometers 107 are rate controlled systems.
With the poterltiometer wiper in the mid-position of its throw, no current will flow in to Ihe associated servo valve, thus no X or Y actuator movement. Upon moving the wiper from its micl-position, responsive to movement of the joystick, current will flow in the servo valve r thus causing X or Y or both X ancl Y actuator movement.
The farther the deviation of the wiper from its mid-position, the greater the curren~ flow, causing a higher rate of actuator movement. Reversing the m~vement o the wiper -to the other side of mid-position on the p~tentiometer reverses the current ~low direction through the servo valve, causiny the X or v, or both, actuator movement in the opposite direction.
Two limit switches 34 are provided for the X actuator (carriage 19) and two limit switches 62 are provided for ~ie Y ac~uator (carriaye 48) to detect end of travel.
The limit switches are proximity switches that detect the presence or absence of metal. If the X ac-tuator reaches end of travel, relay contact Kl (located in ~eries with the servo valve) will open, causing zero 3~22~'~
current flow ~hrou~3h the servo valve and the actuator will come to a stop, preventing damage to the st:ructura~
Conversely, if the Y actuator reaches end of travel, rela~ contact ~2 wlll open, causing the Y actuator to S come to a stop. During normal operation the limit switches and associa~2d logic will cause relays ~1 and ~2 to be energized (will allow curren-t flol.~ through the servo v~lves~ one of the limit switches detects the pxesence of met~l (end of travel) a comparator Ul (con-nected to the limit swil~ch) ~7ill output a logic "1"
causincJ the output of a nand gate U4 to switch :E~om a logic "I" to a logic "0'; which in turn will cause the final nand gate U6 to switch frorn a loglc "0" to a loyic "1", thus de-energizin~ -the relay~ Reversing the direc-tion of the joystick potentiometer will again eneryize the relay through nand ga-te U5, inverter U3 and comparator U2, allowing the ac-tua~or to be moved out of the end of travel limit.
The Z rotation control is a closed loop servo cir-cuit. A potentiometer L04 on the joystick provides the Z rotation command and a potentiolne~er 86 on the Z rota-tion actuator (shaft 8()) provi~es the Z rotation Eeed~
back. Whenevex the position of the Z rotation command potentiometer 104 is changed an appropriate current will flow through the Z servo valve causiny the Z rotation ~eedback to equal the Z rotation command (zero error).
Driving the ~ rotation actuator 80 correspondingly drives the slicker element 78.
Figure 17 shows an alternative Form of support for a hide applicator according to the present inventionO
The typical vacuum drier 10 is identical to that already described. The modified support Xrame 15A is mounted below the drier bed and comprises a pair of end cross beams 16A and 17A supporting a pair oE horizontal 3~ longitudinal beams 18A which function as a track for reciprocal mvvement of a carriage assembly l9A~ generally as p~eviously described. The difference is that hori-zontal arm 44 i~s supported above the vacuum drier bed 12 from carriacJe asseMbly l9A by mean.s of an upwardly extend-ing vertical boom tube 36A. Apart from these differ-ences, the overalL structure and operation o the hide applicator apparatus is as already described.
The form of vacuurn drier illustrated in Figures 1 through 4 and 17 is in-tended -for the simultaneous drying of four hides per bed. These hldes are ordinarily applied by opera-tors working slmultaneous:Ly on each side of the bed applyiny and removing hides. For smaller driers the support Erame may include a sin~le longitlldlnal beam/track supported above and adjacent to the drier bed, or it ma~ be a ~ee-standing single lrack ~rame adapted for positioning alongside and adiacent to a drier with~
out being physically attached thereto~
Referring to E~igure I8, there is shown a further alternative fonn of mounting support for the hide appli-cator arm/trac~ ~4. This form of applicator apparatus is for use with an alternative form of smaller vacuum hide drier 10~ havi.ng a flat drier bed 12A supported on a base housing llA. I'he vacuum head is not shown.
In this insta,~ce, the horizontal. arm/track ~4 is suppoxt-ed by a vertical standard or pedestal llS wh.ich in turn i5 sllpported ~y a ~loor rnounted base 116. The pedestal standard is pos.itioned closely adjacent to the edge of the drier bed 12A. Base 116 may be stationary or may be movable, mounted on casters or the like. Arm/track 44 is rotatably mounted at the top of the pedestal standard 115~ Manipulation of the slickex element 78 is the result of the combination of pivotal rota-tion of the arm/track above the hide surface and reciprocal movement of the slicker carriaye 48. The structure of the arm/track 44 and slicker carriaye 4~ and associated mec.hanisms are o-therw:ise as previousl~ described.
It is apparent that many modifications and varia-tions of this invention as hereinbefore set forth may ~e made without departiny from the spiri~ and scope thereof. The speciEic embodiments described are given by way o.f exarnple onl~ and the invention is limited only by the terms of the appended claims.
Claims (26)
1. A power assist hide applicator apparatus for flattening and stretching a wet hide against the smooth horizontal planar surface of the flat bed of a vacuum hide drier upon which a hide is applied for subsequent drying on the bed according to conventional tannery prac-tice, said apparatus being adapted for positioning adjacent to the bed of a vacuum drier, said apparatus comprising:
A) an elongated horizontal arm, said arm com-prising a horizontal slicker support rotatable out of and into position above and closely adjacent to the upper surface of the drier bed;
B) support means for said horizontal arm, said support means being adapted for positioning spaced from but adjacent to the bed of a vacuum drier;
C) a rotary connection between said support means and one end of said horizontal arm whereby said arm is rotatable ion a plane parallel to and closely adjacent to the upper surface of the drier bed;
D) means for rotating said arm relative to said support means;
E) means supporting a slicker element from said horizontal arm, said slicker element having a smooth straight edge rotatable in a plane parallel to the surface of the drier bed;
F) separate motor power means associated with the slicker element for rotating the same;
G) further separate independent power thrust drive means associated with the slicker element for moving the element into and out of contact with a wet hide carried on the bed, and exerting force on the slicker element; and H) electric control means for actuating the several power means for manipulating the slicker element over the surface of a hide in simulation of manual hide application.
A) an elongated horizontal arm, said arm com-prising a horizontal slicker support rotatable out of and into position above and closely adjacent to the upper surface of the drier bed;
B) support means for said horizontal arm, said support means being adapted for positioning spaced from but adjacent to the bed of a vacuum drier;
C) a rotary connection between said support means and one end of said horizontal arm whereby said arm is rotatable ion a plane parallel to and closely adjacent to the upper surface of the drier bed;
D) means for rotating said arm relative to said support means;
E) means supporting a slicker element from said horizontal arm, said slicker element having a smooth straight edge rotatable in a plane parallel to the surface of the drier bed;
F) separate motor power means associated with the slicker element for rotating the same;
G) further separate independent power thrust drive means associated with the slicker element for moving the element into and out of contact with a wet hide carried on the bed, and exerting force on the slicker element; and H) electric control means for actuating the several power means for manipulating the slicker element over the surface of a hide in simulation of manual hide application.
2. A power assist hide applicator apparatus according to Claim 1 wherein:
A) said horizontal arm comprises a horizontal slicker track;
B) a slicker carriage is mounted on said track for reciprocation along the track; and C) separate motor power means are provided for reciprocating said carriage.
A) said horizontal arm comprises a horizontal slicker track;
B) a slicker carriage is mounted on said track for reciprocation along the track; and C) separate motor power means are provided for reciprocating said carriage.
3. A power assist hide applicator apparatus according to Claim 1 wherein:
A) said support means for the horizontal arm comprises at least one elongated horizontal longitudinal support track adapted to be positioned adjacent to the flat bed of the drier, said track being spaced parallel to the edge of the drier bed;
B) a support carriage is mounted for reciprocable movement along said support track;
C) separate motor power means are provided for reciprocating said support carriage; and D) a vertical boom tube is attached to said support carriage.
A) said support means for the horizontal arm comprises at least one elongated horizontal longitudinal support track adapted to be positioned adjacent to the flat bed of the drier, said track being spaced parallel to the edge of the drier bed;
B) a support carriage is mounted for reciprocable movement along said support track;
C) separate motor power means are provided for reciprocating said support carriage; and D) a vertical boom tube is attached to said support carriage.
4. A power assist hide applicator apparatus according to Claim 3 wherein said support means for the horizontal arm comprises a frame generally proportionate to the flat bed of the drier, and adapted to be positioned adjacent to said bed; said support track extending along one side edge of said support frame.
5. A power assist hide applicator apparatus according to Claim 4 wherein said frame is adapted to be supported above the drier bed.
6. A power assist hide applicator apparatus according to Claim 4 wherein said frame is adapted to be supported below the drier bed.
7. A power assist hide applicator apparatus according to Claim 2 wherein;
A) said support means for the slicker element comprises a head body secured to said slicker carriage and having a tubular shaft journaled for limited reciprocal movement relative thereto;
B) the motor drive means for rotating the slicker element is supported at one end of said tubular shaft for reciprocal movement therewith;
C) an actuator shaft connected at one end to said motor drive means extends through said tubular shaft journaled for rotation relative thereto;
D) the slicker element is supported at the oppposite end of said actuator shaft, and E) said power thrust drive means reciprocate said tubular shaft and slicker element.
A) said support means for the slicker element comprises a head body secured to said slicker carriage and having a tubular shaft journaled for limited reciprocal movement relative thereto;
B) the motor drive means for rotating the slicker element is supported at one end of said tubular shaft for reciprocal movement therewith;
C) an actuator shaft connected at one end to said motor drive means extends through said tubular shaft journaled for rotation relative thereto;
D) the slicker element is supported at the oppposite end of said actuator shaft, and E) said power thrust drive means reciprocate said tubular shaft and slicker element.
8. A power assist hide applicator apparatus according to Claim 7 wherein said reciprocation drive means comprises at least one fluid actuated piston.
9. A power assist hide applicator apparatus according to Claim 7 wherein said slicker element is a blade.
10. A power assist hide applicator apparatus according to Claim 1 wherein:
A) said control means is manually operable and comprises a handle journaled for rotation within a pivot housing;
B) said pivot housing is pivotally supported within a stationary housing for universal pivotal movement;
C) a switch is provided in said handle.
A) said control means is manually operable and comprises a handle journaled for rotation within a pivot housing;
B) said pivot housing is pivotally supported within a stationary housing for universal pivotal movement;
C) a switch is provided in said handle.
11. A power assist hide applicator apparatus according to Claim 10 wherein:
A) electrical connection means between said handle and said motor drive means for the slicker element causes rotation of said slicker element responsive to rotation of the handle;
B) electrical connection means between said pivot housing and said support and slicker carriages causes movement of said carriages responsive to pivotal movement of said handle and pivot housing: and C) electrical connection means between said handle switch and said thrust means causes reciprocable movement of the slicker element responsive to actuation of said switch.
A) electrical connection means between said handle and said motor drive means for the slicker element causes rotation of said slicker element responsive to rotation of the handle;
B) electrical connection means between said pivot housing and said support and slicker carriages causes movement of said carriages responsive to pivotal movement of said handle and pivot housing: and C) electrical connection means between said handle switch and said thrust means causes reciprocable movement of the slicker element responsive to actuation of said switch.
12. A power assist hide applicator apparatus according to Claim 1 wherein:
A) said support means comprises a pedestal adapted to be floor supported and adapted to be positioned adjacent to said bed; and B) said horizontal arm is connected to said pedestal for rotary movement about a vertical axis.
A) said support means comprises a pedestal adapted to be floor supported and adapted to be positioned adjacent to said bed; and B) said horizontal arm is connected to said pedestal for rotary movement about a vertical axis.
13. A power assist hide applicator apparatus for flattening and stretching a wet hide against the smooth horizontal planar surface of the flat bed of a vacuum hide drier upon which a hide is applied for subsequent drying on the bed according to conventional tannery practice, said apparatus being adapted for mounting adjacent to the bad of a vacuum drier, said apparatus comprising:
A) a support frame generally proportionate to the flat bed of the drier, and adapted to be positioned spaced from but adjacent to said bed;
B) at least one elongated horizontal longitudinal support track along one side edge of said support frame, said track being spaced parallel to the corresponding edge of the drier bed;
C) a support carriage mounted for reciprocable movement along said track;
D) motor power means for reciprocating said support carriage;
E) an elongated horizontal arm comprising a horizontal slicker track rotatable out of and into position above and closely adjacent to the upper surface of the drier bed;
F) a rotary connection between said support carriage and one end of said horizontal arm whereby said arm is rotatable in a plane parallel to and closely adjacent to the upper surface of the drier bed;
G) means for rotating said arm relative to said support carriage;
H) a slicker carriage reciprocable along said slicker track;
I) separate motor power means for reciprocating said slicker carriage;
J) means supporting a slicker element from said slicker carriage, said slicker element having a smooth straight edge rotatable in a plane parallel to the surface of the drier bed;
K) separate motor power means associated with the slicker element for rotating the same;
L) further separate independent power thrust drive means associated with the slicker element for moving the element into and out of con-tact with a wet hide carried on the bed, and exerting force on the slicker element;
and .
M) electric control means for actuating the several power means for manipulating the slicker element over the surface of a hide in simulation of manual hide application
A) a support frame generally proportionate to the flat bed of the drier, and adapted to be positioned spaced from but adjacent to said bed;
B) at least one elongated horizontal longitudinal support track along one side edge of said support frame, said track being spaced parallel to the corresponding edge of the drier bed;
C) a support carriage mounted for reciprocable movement along said track;
D) motor power means for reciprocating said support carriage;
E) an elongated horizontal arm comprising a horizontal slicker track rotatable out of and into position above and closely adjacent to the upper surface of the drier bed;
F) a rotary connection between said support carriage and one end of said horizontal arm whereby said arm is rotatable in a plane parallel to and closely adjacent to the upper surface of the drier bed;
G) means for rotating said arm relative to said support carriage;
H) a slicker carriage reciprocable along said slicker track;
I) separate motor power means for reciprocating said slicker carriage;
J) means supporting a slicker element from said slicker carriage, said slicker element having a smooth straight edge rotatable in a plane parallel to the surface of the drier bed;
K) separate motor power means associated with the slicker element for rotating the same;
L) further separate independent power thrust drive means associated with the slicker element for moving the element into and out of con-tact with a wet hide carried on the bed, and exerting force on the slicker element;
and .
M) electric control means for actuating the several power means for manipulating the slicker element over the surface of a hide in simulation of manual hide application
14. A power assist hide applicator apparatus according to Claim 13 wherein said rotary connection comprises a vertical boom tube attached at one end to said support carriage.
15. A power assist hide applicator apparatus according to Claim 13 wherein said support frame is adapted to be mounted above the drier bed and said boom tube is suspended from the support carriage.
16. A power assist hide applicator apparatus according to Claim 13 wherein:
A) said support means for the slicker element comprises a head body secured to said slicker carriage and having a tubular shaft journaled for limited reciprocal movement relative thereto;
B) the motor drive means for rotating the slicker element is supported at one end of said tubular shaft for reciprocal movement therewith, C) an actuator shaft connected at one end to said motor drive means extends through said tubular shaft journaled for rotation relative thereto;
D) the slicker element is supported at the opposite end of said actuator shaft; and E) said power thrust drive means reciprocate said tubular shaft and slicker element.
A) said support means for the slicker element comprises a head body secured to said slicker carriage and having a tubular shaft journaled for limited reciprocal movement relative thereto;
B) the motor drive means for rotating the slicker element is supported at one end of said tubular shaft for reciprocal movement therewith, C) an actuator shaft connected at one end to said motor drive means extends through said tubular shaft journaled for rotation relative thereto;
D) the slicker element is supported at the opposite end of said actuator shaft; and E) said power thrust drive means reciprocate said tubular shaft and slicker element.
17. A power assist hide applicator apparatus according to Claim 16 wherein said reciprocation drive means comprises at least one fluid actuated piston.
18. A power assist hide applicator apparatus according to Claim 16 wherein said slicker element is a blade.
19. A power assist hide applicator apparatus according to Claim 13 wherein:
A) said control means is manually operable and comprises a handle journaled for rotation within a pivot housing;
B) said pivot housing is pivotally supported within a stationary housing for universal pivotal movement;
C) a switch is provided in said handle.
A) said control means is manually operable and comprises a handle journaled for rotation within a pivot housing;
B) said pivot housing is pivotally supported within a stationary housing for universal pivotal movement;
C) a switch is provided in said handle.
20. A power assist hide applicator apparatus according to Claim 19 wherein:
A) electrical connection means between said handle and said motor drive means for the slicker element causes rotation of said slicker element responsive to rotation of the handle;
B) electrical connection means between said pivot housing and said support and slicker carriages causes movement of said carriages responsive to pivotal movement of said handle and pivot housing; and C) electrical connection means between said handle switch and said thrust means causes reciprocable movement of the slicker element responsive to actuation of said switch.
A) electrical connection means between said handle and said motor drive means for the slicker element causes rotation of said slicker element responsive to rotation of the handle;
B) electrical connection means between said pivot housing and said support and slicker carriages causes movement of said carriages responsive to pivotal movement of said handle and pivot housing; and C) electrical connection means between said handle switch and said thrust means causes reciprocable movement of the slicker element responsive to actuation of said switch.
21. A power assist hide applicator apparatus for flattening and stretching a wet hide against the smooth horizontal planar surface of the flat bed of a vacuum hide drier upon which a hide is applied for subsequent drying on the bed according to conventional tannery practice, said apparatus being adapted for mounting adjacent to the bed of a vacuum drier, said apparatus comprising:
A) a support frame generally proportionate to the flat bed of the drier, and adapted to be positioned above said bed;
B) at least one elongated horizontal longi-tudinal support track along one side edge of said support frame, said track being spaced parallel to the corresponding edge of the drier bed, C) a support carriage mounted for reciprocable movement along said track;
D) motor power means for reciprocating said support carriage;
E) an elongated horizontal arm comprising a horizontal slicker track rotatable into position above and closely adjacent to the upper surface of the drier bed;
F) a rotary connection between said support carriage and one end of said horizontal arm whereby said arm is rotatable in a plane parallel to and closely adjacent to the upper surface of the drier bed, said rotary connection including a vertical boom tube suspended from said support carriage, G) means for rotating said arm relative to said support carriage;
H) a slicker carriage reciprocable along said slicker track;
I) separate motor power thrust drive means for reciprocating said slicker carriage;
J) means supporting a slicker element from said slicker carriage, said slicker element having a smooth straight edge rotatable in a plane parallel to the surface of the drier bed;
K) separate motor power means associated with the slicker element for rotating the same;
L) further separate independent power thrust means associated with the slicker element for moving the element vertically into and out of contact with a wet hide carried on the bed, and exerting force on the slicker element;
and M) electric control means for actuating the several power means for manipulating the slicker element over the surface of a hide in simulation of manual hide application.
A) a support frame generally proportionate to the flat bed of the drier, and adapted to be positioned above said bed;
B) at least one elongated horizontal longi-tudinal support track along one side edge of said support frame, said track being spaced parallel to the corresponding edge of the drier bed, C) a support carriage mounted for reciprocable movement along said track;
D) motor power means for reciprocating said support carriage;
E) an elongated horizontal arm comprising a horizontal slicker track rotatable into position above and closely adjacent to the upper surface of the drier bed;
F) a rotary connection between said support carriage and one end of said horizontal arm whereby said arm is rotatable in a plane parallel to and closely adjacent to the upper surface of the drier bed, said rotary connection including a vertical boom tube suspended from said support carriage, G) means for rotating said arm relative to said support carriage;
H) a slicker carriage reciprocable along said slicker track;
I) separate motor power thrust drive means for reciprocating said slicker carriage;
J) means supporting a slicker element from said slicker carriage, said slicker element having a smooth straight edge rotatable in a plane parallel to the surface of the drier bed;
K) separate motor power means associated with the slicker element for rotating the same;
L) further separate independent power thrust means associated with the slicker element for moving the element vertically into and out of contact with a wet hide carried on the bed, and exerting force on the slicker element;
and M) electric control means for actuating the several power means for manipulating the slicker element over the surface of a hide in simulation of manual hide application.
22. A power assist hide applicator apparatus according to Claim 21 wherein:
A) said support means for the slicker element comprises a head body secured to said slicker carriage and having a tubular shaft journaled for limited reciprocal movement relative thereto;
B) the motor drive means for rotating the slicker element is supported at one end of said tubular shaft for reciprocal movement therewith, C) an actuator shaft connected at one end to said motor drive means extends through said tubular shaft journaled for rotation relative thereto;
D) the slicker element is supported at the opposite end of said actuator shaft; and E) said power thrust drive means reciprocate said tubular shaft and slicker element.
A) said support means for the slicker element comprises a head body secured to said slicker carriage and having a tubular shaft journaled for limited reciprocal movement relative thereto;
B) the motor drive means for rotating the slicker element is supported at one end of said tubular shaft for reciprocal movement therewith, C) an actuator shaft connected at one end to said motor drive means extends through said tubular shaft journaled for rotation relative thereto;
D) the slicker element is supported at the opposite end of said actuator shaft; and E) said power thrust drive means reciprocate said tubular shaft and slicker element.
23. A power assist hide applicator apparatus according to Claim 22 wherein said reciprocation drive means comprises at least one fluid actuated piston.
24. A power assist hide applicator apparatus according to Claim 22 wherein said slicker element is a blade.
25. A power assist hide applicator apparatus according to Claim 21 wherein:
A) said control means is manually operable and comprises a handle journaled for rotation within a pivot housing;
B) said pivot housing is pivotally supported within a stationary housing for universal pivotal movement;
C) a switch is provided in said handle.
A) said control means is manually operable and comprises a handle journaled for rotation within a pivot housing;
B) said pivot housing is pivotally supported within a stationary housing for universal pivotal movement;
C) a switch is provided in said handle.
26. A power assist hide applicator apparatus according to Claim 25 wherein:
A) electrical connection means between said handle and said motor drive means for the slicker element causes rotation of said slicker element responsive to rotation of the handle;
B) electrical connection means between said pivot housing and said support and slicker carriages causes movement of said carriages responsive to pivotal movement of said handle and pivot housing; and C) electrical connection means between said handle switch and said thrust means causes reciprocable movement of the slicker element responsive to actuation of said switch.
A) electrical connection means between said handle and said motor drive means for the slicker element causes rotation of said slicker element responsive to rotation of the handle;
B) electrical connection means between said pivot housing and said support and slicker carriages causes movement of said carriages responsive to pivotal movement of said handle and pivot housing; and C) electrical connection means between said handle switch and said thrust means causes reciprocable movement of the slicker element responsive to actuation of said switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/074,686 US4802349A (en) | 1987-07-17 | 1987-07-17 | Horizontal bed power assist hide applicator |
| US74,686 | 1987-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1322279C true CA1322279C (en) | 1993-09-21 |
Family
ID=22121044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000571996A Expired - Lifetime CA1322279C (en) | 1987-07-17 | 1988-07-13 | Horizontal bed power assist hide applicator |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4802349A (en) |
| JP (1) | JPS6436700A (en) |
| KR (1) | KR910005135B1 (en) |
| BR (1) | BR8803579A (en) |
| CA (1) | CA1322279C (en) |
| CS (1) | CS275750B6 (en) |
| DE (1) | DE3824100C2 (en) |
| FI (1) | FI90997C (en) |
| FR (1) | FR2618162B1 (en) |
| IT (1) | IT1221806B (en) |
| MX (1) | MX166582B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050278905A1 (en) * | 2004-02-05 | 2005-12-22 | Eagle Ottawa, Llc | Toggle clamp assist tool |
| US8776554B2 (en) | 2012-11-21 | 2014-07-15 | Lear Corporation | Method of processing leather material |
| CN104774977A (en) * | 2015-03-18 | 2015-07-15 | 海宁富邦汽车内饰有限公司 | Automobile leather delivering and drying all-in-one (AIO) machine with improved structure |
| CN104774976A (en) * | 2015-03-18 | 2015-07-15 | 海宁富邦汽车内饰有限公司 | Automobile leather delivering and drying all-in-one (AIO) machine |
| NL2015103B1 (en) * | 2015-07-07 | 2017-01-31 | Securo B V | Device and method for processing a flexible sheet. |
| CN110484659A (en) * | 2019-09-25 | 2019-11-22 | 佛山市南海区尚格机械有限公司 | Leather curved surface shaping equipment |
| CN110883130B (en) * | 2019-10-24 | 2021-02-26 | 惠州高视科技有限公司 | Device and method for scraping object |
| BR112022016334A2 (en) * | 2020-02-18 | 2022-10-04 | Comelz Spa | CUTTING MACHINE EQUIPPED WITH NEW SAFETY MEASURES |
| EP4106963A1 (en) * | 2020-02-18 | 2022-12-28 | Comelz S.p.A. | Cutting machine having an improved structure |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US157691A (en) * | 1874-12-15 | Improvement in machinery for scouring, glassing, and setting leather | ||
| US240997A (en) * | 1881-05-03 | Leather-dressing machine | ||
| US179928A (en) * | 1876-07-18 | Improvement in machines for scouring, setting, and glassing leather | ||
| US569843A (en) * | 1896-10-20 | Polishing or finishing machine | ||
| US835305A (en) * | 1905-04-13 | 1906-11-06 | Turner Tanning Machinery Co | Leather-working machine. |
| FR412566A (en) * | 1910-02-12 | 1910-07-16 | Victor Martin | Machine for mechanically ironing the skins |
| FR457929A (en) * | 1913-05-15 | 1913-09-29 | Jean Paul Philibert | Machine to wind and smooth leather |
| DE396520C (en) * | 1923-01-16 | 1924-06-04 | Munk & Schmitz Maschinenfabrik | Push-out machine for processing upper leathers, especially fine types such as Ross-Chevreau |
| US3675450A (en) * | 1971-03-23 | 1972-07-11 | Akzona Inc | Hide pasting machine |
| US4596124A (en) * | 1984-12-10 | 1986-06-24 | Sargent Sub (Delaware), Inc. | Power assist hide applicator |
-
1987
- 1987-07-17 US US07/074,686 patent/US4802349A/en not_active Expired - Lifetime
-
1988
- 1988-05-16 IT IT47970/88A patent/IT1221806B/en active
- 1988-07-08 CS CS884953A patent/CS275750B6/en not_active IP Right Cessation
- 1988-07-12 JP JP63173642A patent/JPS6436700A/en active Pending
- 1988-07-13 CA CA000571996A patent/CA1322279C/en not_active Expired - Lifetime
- 1988-07-15 FI FI883370A patent/FI90997C/en not_active IP Right Cessation
- 1988-07-15 BR BR8803579A patent/BR8803579A/en not_active IP Right Cessation
- 1988-07-15 DE DE3824100A patent/DE3824100C2/en not_active Expired - Fee Related
- 1988-07-15 MX MX012288A patent/MX166582B/en unknown
- 1988-07-15 FR FR888809642A patent/FR2618162B1/en not_active Expired - Fee Related
- 1988-07-16 KR KR1019880008971A patent/KR910005135B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI883370A0 (en) | 1988-07-15 |
| FI90997C (en) | 1994-04-25 |
| FR2618162A1 (en) | 1989-01-20 |
| FI883370A (en) | 1989-01-18 |
| JPS6436700A (en) | 1989-02-07 |
| FI90997B (en) | 1994-01-14 |
| IT8847970A0 (en) | 1988-05-16 |
| MX166582B (en) | 1993-01-18 |
| DE3824100C2 (en) | 1997-07-17 |
| FR2618162B1 (en) | 1994-06-17 |
| DE3824100A1 (en) | 1989-02-02 |
| KR910005135B1 (en) | 1991-07-23 |
| US4802349A (en) | 1989-02-07 |
| IT1221806B (en) | 1990-07-12 |
| CS275750B6 (en) | 1992-03-18 |
| KR890002422A (en) | 1989-04-10 |
| BR8803579A (en) | 1989-02-08 |
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Legal Events
| Date | Code | Title | Description |
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| MKLA | Lapsed | ||
| MKEC | Expiry (correction) |
Effective date: 20121205 |